Slower and incomplete retrieval of speech motor plans is the proximal source of stuttering: stutters occur when syllable motor plans stored in memory are concatenated to produce the utterance motor plan.
D000223:Adaptation, Psychological / Q000502:physiology; D006801:Humans; D008568:Memory / Q000502:physiology*; D013312:Stress, Physiological / Q000378:metabolism; D013342:Stuttering / Q000209:etiology* / Q000378:metabolism